Artificial denture.



N. W. NORDSTROM.

ARTIHCIAL DENTURE.

APPLICATION HLED,0CT.2.1916.

Patented Jan. 1, 19118.

3 n ve u hoz dann sraajns friarnn'r ernten.

NILS w. NORDSTROM, oF izRooKf'LYN, Nw otii.-

ARTIFICIAL D'n'rnn'n.

Spearman of Letten fatei't.

Application ined october a, 191e. serial nun-masia'.

V'is a specification.

This invention relates to means lfor `oonnecting together different parts of an artificial denture, and it appertains more especially to an improved construction ofstud and socket members adapted for interen- V`gagement between the contiguous surfaces of a crown placed upon a natural tooth and the proximate end of a dental bridge designed to fill a vacuity in the alveolar process. One of the objects of the invention is to provide a pair of co-,acting members of the character described with similar means for attaching each of them separately to the parts that are to be supported onefrom the other in the bridge work.

Another object is the provision' ofA extended attaching means on both thestud and socket members which will admit of being spread and fitted over comparatively large areas of their respective vparts of the denture, thus facilitating accurate adjustment and affording ample support therebetween. A further object is to produce associated members of the species mentioned having interitting elements which shall be properly guided laterally'as well as longitudinally, and held against endwise movement'in one direction.

Stil-l another object is the productionl of Vmembers ofthe type specified which shall be simple, strong, durable, easy vto apply, and at the same time amenable to low cost of manufacture. Y

Other objects and advantages will become apparent as the specification proceeds;

- 'In vthe said drawings, the several views are vall made on an enlarged scale to better kill ust-rate they distinguishing features ofthe invention. 7 i

VIligure v1 is a face vii-ew the stud fcn- Astitutingv.one 'ofl the du'alfnienibers above mentioned; Y Y l j ,y l Y'Fig. 2 is' a rear view ,of the socket iiicln ded in .the pair of members f;-

f nigga aan maV view et both member@- i'nterconnected;

Fig.V 4 is va vertical transverse section through the center of the interconnected members, the 'section' being on the line of Fig. 3', looking in the direction of the arrows; and

Fig.j5 is a top 'plan view, partly insection, showing` one embodiment of the invention, in which the conjoined stud andA socket -members cionstittethe connecting medium betweenr 'a tooth *and* la bridge in a denture.

Fig. 6 isa *side e'levatioiif ofthe same embodiment ofthe invention; 'and Figtfz is; a* Centrali'ongttudtaileectia of@ the lstructure"shown in-Fig. ,5; u

In these vie'fws'V the reference numerals 1l 'and IQYdenote, respectively, receiving vand 'thefenga'g'ing elements in the stud 4and socket members, by mea-Refer which the Sepa- 'y Preferably, the receiving: element 11 is -Inade 'circularI inL cross "sect on and of elonopenfor the therein of the coi-acting element- 19. lotfhfver end 13 of the barrel shape'dwelement may remainclosed to ting'v termi-rial of the element y3in1 be made any1 other preferred-term. vone Siae of the `vgate barrel frmatiomv; having one eindY 12 'barrel `has @t-longitudinal. opening@ at 1i,-

the edges of which:d are turned outwardly in opposite'dire'ctionssol as'vto form a pair of lateral fianges 15'. s These two flanges are Vintercon'nected at one end of the barrel by a vsimilar flangek 16,` presenting therewith a broad, -ii`atf,'beaijing plate composed of three vpartspfill projected Vfroml the barrel in a single plane, approz'ri'matelyj They material composing this 'triple' or three part bearing' platefis preferably annealed ormade softer than that frotaywnieh the barter lis formed, fin 'Order that item3# readily adapt itself Vto applied.-

The aforementioned engaging eleinentdf)V is designed to fit the inside of the barrel or receiving element abo'vefde'scribed? To this end, the said engaging element is of similar body configuration as the said receiving element, and furtheris provided with a fin or lateral extensionv 20, adapted to slide through and along the previously mentioned opening 14 of the barrel. At the outer edge .of thisiin; is Aalso formed a tripartite, substantiallyflevel bearing plate similartothat of the receiving element, and likewise com- ,.posed', oftwo oppositely extending vlateral flanges 2l, and a connecting end flange ,22. Fig. B shows thelatter namedfflangesof the bearing plate as being curved ldifferently from lthe-bearing plate provided on the refceiving element, but in Vpractice bothbearing plates may be of exactly theY same shape.

"Y In F ig. 5 Yissho'wn by way of example, one of several uses to which a pairl of the stud and socket members herein disclosed may be Y appliedf As represented in thisview, the bearing .plate formed bythey-combined v.to the front side vof a cap .25, covering aY molar tooth, while the opposed tripartltei' flanges Y21, 22l ofthe stud V member is fitted bearing plate, composed of the flanges 15,|

16 of the socket member, is attached tothe) adjoining rear endrvof adentalbridge 26j The receiving element lll andthe engaging element 19, it will be seen, constitute interlockingparts between. thetivo bearing plates! vT his makes a firm joint possessing various beneficial features, and particularly the advantage ofl permitting theforward end of the bridge to vbe rigidly secured to another cap 27, also covering `a tooth, for instance, a

bicuspid. Manifestly, it is conducive to, better workmanship and all around convenience to have the bridge solidly attached toa cap or equivalent anchor at one end, and then to aline the guidingsurfaces kof the Vstud and socket members while adjusting the latter in parallelism with one side of a singletooth, than to be obliged to dress lthe yopposed faces of two teeth so that theywill lie in parallel planesrespectively adapted to accommodate the bridge at both extremities. It is understoodthatthe .flanges 21, 22 of lY the'studfmember 19and the flanges l5, 1G

ofthe socket member -11 are originally made larger than is necessary` and that the surplus portionsof the saidiianges, `suchnas appear at28, 29 in Figs. y5 and', and any similar .excessof metal or othermaterial employed, are carefullyjtrimmed voif and eliminated while thedentureisbeing prepared. lVhen y finally setting the capsy 25,127" and the bridge 26. together with the intermediate stud and socket members in ytheir assigned'positions, a suitable. cement .is applied-.to the inter- 4fitting surfaces` of thecaps and. anchoring teeth-therein, as .well asl to the contacting sides of the receiving and engaging elements 11, 19 and the flanges thereof where they face one another.

The-chief# advantage of the before described construction and method Vof procedure is that a large double bearing surface is provided for Jthe jointed ends ofthe denture When'the flanges of the stud-and socket members ,are-placed in juxtaposition which is conducive to better holding power between the parts thatv arejunited. ,f `Further more, it is nonly necessary to Atake -j-caref of o ne :alinementfor the bridge, whereasfwith previous methods and structures it `wasV required ,to `aline the bridge fromboth -ends,

oncel for each anchoring tooth, Vand oftentimes the sides ofthe anchor teeth'had to rbe dressed, which was injurious tor'them .besides being'painful to thepatientf Although ,thestudV andvrsocket,members` aforesaid have been described"A and illustrated in conjunction with a molar tooth .cap and a dental bridge thereto attached, no limitation in that sense. is intended, as vthese studs and sockets can be applied and utilizedV whereveran yaccurate and secure' vconnection is required between two or morepartsof an .artificial denture, or similar structure.;

N Vhile aV certain preferred embodiment of xwill beunderstood that changesin-thewform, arrangements, sizes, Yproportions and details thereof may be -made Without departing -:from the scope of the invention as defined by the appended claims. j, Y, Having described lmy invention What VI desire lto secure, by Letters Patent and Ajclaim'isz-f- A Vl.y A' dental joint including opposed artificial supports designed to be brought to therefrom iii position for' interengagement on the same side of/bothplates, one of said retainers being composed of a stud of limited ih eight and a web therefor joining theV same Vto its plate, and the otherretainer consisting this device has been shown and described, itv

izo

of a vsocket commensurate withr vsaidwstudI originating in the other platefat the point of intersection with said Web.l A .Y A 3. Anartificial denture including a retainer vadapted .tobe fixed to a tooth, aseoond retainerattachable to another tooth'at a certain distance in line therewith, a bridge nent attachment of the distant retainer with its tooth.

Signed at the borough of Manhattan, in the county of New York and State of New 15 ork, this 29th day of September, A. D.

NILS W. NORDSTROM.

Witnesses:

H. C. KARLsoN, FRED A. KUNEMUND.

Copies of this patent may be obtained for ve cents eaeh, by addressing the Commissioner of Patents, Washington, D. C. 

